mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 10:50:07 +00:00
6075607b9a
1998-08-26 17:48 Ulrich Drepper <drepper@cygnus.com> * elf/dl-close.c (_dl_close): Move map->l_nsearchlist value into local variable so that map can be freed. Reported by Philippe Troin <phil@fifi.org>. * elf/dl-open.c (dl_open_worker): Correct test for extending global scope array. Patch by Philippe Troin <phil@fifi.org>. 1998-08-26 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/register-dump.h: Rewrite. Much nicer this way. Don't call writev() with a 100-element vector. * sysdeps/generic/segfault.c (catch_segfault): Skip top-level NULL return address. * sysdeps/powerpc/elf/libc-start.c: Sync up with generic version. In particular, set __libc_stack_end. * sysdeps/powerpc/elf/start.S: Allow _init and _fini to be undefined. Fix copyright notice. 1998-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * math/Makefile (gmp-objs): New variable. ($(objpfx)atest-exp, $(objpfx)atest-sincos, $(objpfx)atest-exp2): Depend on it. (tests): Add atest-exp atest-sincos atest-exp2. (tests-static): Remove atest-exp atest-sincos atest-exp2. * elf/rtld.c (dl_main): Unload map file before jumping to user code.
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/* Copyright (C) 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <elf/ldsodefs.h>
|
|
|
|
extern void __libc_init_first (int argc, char **argv, char **envp);
|
|
|
|
extern int _dl_starting_up;
|
|
weak_extern (_dl_starting_up)
|
|
extern int __libc_multiple_libcs;
|
|
extern void *__libc_stack_end;
|
|
|
|
struct startup_info
|
|
{
|
|
void *sda_base;
|
|
int (*main) (int, char **, char **, void *);
|
|
int (*init) (int, char **, char **, void *);
|
|
void (*fini) (void);
|
|
};
|
|
|
|
int
|
|
__libc_start_main (int argc, char **argv, char **envp,
|
|
void *auxvec, void (*rtld_fini) (void),
|
|
struct startup_info *stinfo,
|
|
char **stack_on_entry)
|
|
{
|
|
#ifndef PIC
|
|
/* The next variable is only here to work around a bug in gcc <= 2.7.2.2.
|
|
If the address would be taken inside the expression the optimizer
|
|
would try to be too smart and throws it away. Grrr. */
|
|
int *dummy_addr = &_dl_starting_up;
|
|
|
|
__libc_multiple_libcs = dummy_addr && !_dl_starting_up;
|
|
#endif
|
|
|
|
/* the PPC SVR4 ABI says that the top thing on the stack will
|
|
be a NULL pointer, so if not we assume that we're being called
|
|
as a statically-linked program by Linux... */
|
|
if (*stack_on_entry != NULL)
|
|
{
|
|
/* ...in which case, we have argc as the top thing on the
|
|
stack, followed by argv (NULL-terminated), envp (likewise),
|
|
and the auxilary vector. */
|
|
argc = *(int *) stack_on_entry;
|
|
argv = stack_on_entry + 1;
|
|
envp = argv + argc + 1;
|
|
auxvec = envp;
|
|
while (*(char **) auxvec != NULL)
|
|
++auxvec;
|
|
++auxvec;
|
|
rtld_fini = NULL;
|
|
}
|
|
|
|
/* Store something that has some relationship to the end of the
|
|
stack, for backtraces. This variable should be thread-specific. */
|
|
__libc_stack_end = stack_on_entry + 4;
|
|
|
|
/* Set the global _environ variable correctly. */
|
|
__environ = envp;
|
|
|
|
/* Register the destructor of the dynamic linker if there is any. */
|
|
if (rtld_fini != NULL)
|
|
atexit (rtld_fini);
|
|
|
|
/* Call the initializer of the libc. */
|
|
#ifdef PIC
|
|
if (_dl_debug_impcalls)
|
|
_dl_debug_message (1, "\ninitialize libc\n\n", NULL);
|
|
#endif
|
|
__libc_init_first (argc, argv, envp);
|
|
|
|
/* Register the destructor of the program, if any. */
|
|
if (stinfo->fini)
|
|
atexit (stinfo->fini);
|
|
|
|
/* Call the initializer of the program, if any. */
|
|
#ifdef PIC
|
|
if (_dl_debug_impcalls)
|
|
_dl_debug_message (1, "\ninitialize program: ", argv[0], "\n\n", NULL);
|
|
#endif
|
|
if (stinfo->init)
|
|
stinfo->init (argc, argv, __environ, auxvec);
|
|
|
|
#ifdef PIC
|
|
if (_dl_debug_impcalls)
|
|
_dl_debug_message (1, "\ntransferring control: ", argv[0], "\n\n", NULL);
|
|
#endif
|
|
|
|
exit (stinfo->main (argc, argv, __environ, auxvec));
|
|
}
|